As the article states, but is a confusing in the title, this isn't a problem with all Zero Knowledge Protocols (ZKP) but is a problem with a specific ZKP, namel

As the article states, but is a confusing in the title, this isn't a problem with all Zero Knowledge Protocols (ZKP) but is a problem with a specific ZKP, namely zk-Snarks. You can do ZKPs without a trusted setup, they are less performant than zk-Snarks. It seems likely that in the next few years these performance problems will be overcome. Most people I've talked to in the field are very confident that protocols like zk-snarks can be done without trusted setup.